body { 
            background: linear-gradient(135deg, #0f2027 0%, #203a43 50%, #2c5364 100%); 
            font-family: 'Segoe UI', sans-serif; 
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }
        .login-card { 
            max-width: 400px; 
            width: 100%;
            padding: 25px; 
            border-radius: 24px; 
            border: none; 
            box-shadow: 0 20px 40px rgba(0,0,0,0.3); 
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
        }
        .form-control {
            border-radius: 12px;
            padding: 12px 16px;
            border: 1px solid #ced4da;
            background-color: #f8f9fa;
            transition: all 0.2s ease;
        }
        .form-control:focus {
            background-color: #fff;
            border-color: #2a5298;
            box-shadow: 0 0 0 0.25rem rgba(42, 82, 152, 0.15);
        }
        .btn-primary { 
            background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%); 
            border: none; 
            border-radius: 12px;
            padding: 12px;
            transition: all 0.3s ease;
        }
        .btn-primary:hover { 
            background: linear-gradient(135deg, #2a5298 0%, #1e3c72 100%); 
            transform: translateY(-1px);
            box-shadow: 0 5px 15px rgba(42, 82, 152, 0.4);
        }
        .credits {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.78rem;
            letter-spacing: 0.8px;
            text-transform: uppercase;
            text-align: center;
            margin-top: 25px;
        }
        .credits strong {
            color: #ffc107;
            font-weight: 600;
        }